Radiator for hot-air furnaces



July 16, 1929.

L. WILLIAMS RADIATOR FOR HOT .AIR FURNAGES Filed Dec. 20, 1927 fr o a o a 7K9 Z1 :z -3;);- g/f i WM @f @A ZZ@ Patented July 16, 1929.

UNITED STATES PATENT OFFICE.

LESTER WILLIAMS, OF MARSHALLTOWN, IOWA, ASSIGNOR TO MARSHALLTOWN HEATER COMPANY, OF MARSHAILTOWN, IOWA, A CORPORATION OF' IOWA.

RADIATOR FOR HOT-AIR FURNACES.'

Application ledDecember 20, 1927.` Serial No. 241,338.

circulating the gases through the radiator.

and for causing the gases to so circulate or to be delivered directly to the flue.

More specifically it is the object of my invention to provide a radiator for hot air furnaces of simple, durable and inexpensive construction, having inlet and outlet openings and partitions for forming a circuitous path for the gases through the radiator, and in connection therewith a gravity operated damper for either directing the gases through the circuitous path or directly from the. inlet to the outlet openings.

vA further object is to provide in a radiator attachment for hot `air furnaces an improved damper which is caused to move to its closed position by gravity.

My invention consists in the construction, arrangement and combination of the various parts of the device, whereby the objects con templated are attained, as hereinafter more fully set-forth, pointed out in my claims, and' illustrated in the accompanying drawings, in

which:

Figure lis a side elevation of a furnace showing my improved radiator attached thereto.

Figure 2, is a plan view of the same showing the top of the radiator removed. l

Figure 3 is a back view showing the back wall of theradiator removed.

Figure 4 is a vertical sectional view of the radiator.

The numeral 1() indicates a hotair furnace 0f the ordinary construction having a flue opening .11. Secured to the furnace is a collar 12 surrounding the openingll to which my improved radiator is attached. Said radiator comprises a front member 13 anda back member 14 and end members 15. Said wall members are preferably formed of a single piece of sheet metal bent into the shape clearly illustrated in Figure 2, with the front and back vmembers spaced apart a considerable distance, and forming a crescent shaped casing .as viewed from above. A bottom plate 16 and a top platef17 are provided which are riveted together to form an air tightcasing. The top end ofthe front member 13 is provided with an opening 18 communicating with the collar 12, while the back plate 14 is provided with an opening 19 in alinement with the opening 18. A collar 2O is secured to the plate 14 and surrounding the opening 19 to which the flue pipe is connected. The upper side of the member 20 has a substantially horizontal recess 21. The bottom end of the plate 14 is provided with an opening 22 having an outwardly extending collar 23, provided with a door 24. The opening 22 is located preferably vertically below the opening 19 and near the bottom end of the chamber to provide means whereby t-he chamber mav be cleaned out when so desired.

Mounted between the front and back members 13 and 14 is a pair of vertically arranged plates 25 spaced apart a distance slightly greater than the diameter of the opening 19, so that said opening is between said plates. The lower ends of the plates 25 terminate at a point near the upper side of the opening 22'. The upper ends of the back edges of the plates 25 terminate at a point in line with the upper side of the opening 19, while the front edges of saidplates terminate at a point near the lower side of the opening 18, so that the upper ends of the plates are inclined upwardly and rearwardly.

Supported on the inclined ends of the plates 25 is ahead plate 26 having downwardly extending flanges 27 which are riveted to the upper ends of the plates 25. The said head plate Vforms a partition between the openings 18 and 19 and is provided with ,a damper opening 28. v

Pivotally mounted in the ends of the recess portionV 21 is a horizontally arranged shaft 29 mounted in one edge of a damper 3() in such a manner that asthe shaft 29 is rocked, the damper 30 will be elevated and lowered. A crank 31 is mounted on one end of the shaft 29 having a horizontally arranged rod 32 extending over the top of the furnace 10 and through the front wall of the furnace casing where it may be readily grasped by the operator and moved rearwardly to swing the damper to an open position, as shown by dot-- ted lines in Figure 4. When the member 32 is released, the damper will drop to its closed 1; cation with the opening 19 when the damper is closed, and in communication with the end compartments through the opening provided between the lower ends of the plates and the bottom plate 16. The upper ends of the i end compartments are in communication with CTI the inlet opening 1S through the space above the damper 80. When the damper is closed, the gases will travel downwardly through the end compartments and then upwardly through the central compartment, in the manner illustrated by the arrows in Figure 3, and thence out through the opening 19 to the iiue, thereby causing' the gases to travel through a. comparatively long path, the side and end members forming a large radiating surface, so that a large per cent of the heat from the products of combustion in the furnace will be utilized for heating purposes, it being under stood that the radiator is mounted within the Outer furnace wall with the furnace member 10. These walls are removed from the drawings, inasmuch as they form no part of my present invention. The collar 12 is of considerable length so that the front plate 13 will be spaced from the furnace wall a considerable distance to provide a vertical passage between the furnace and said front plate.

It will be seen that if the damper 30 is closed and the heated gases are caused to travel through the end and central compartments a considerable amount of heat will lbe radiated and the velocity of the draft decreased to such an extent that it is sometimes desirable to place the openings 18 and 19 into direct communication with each other forincreasing the draft in the furnace, for kindling lires and so forth, in which case the damper 30 is elevated to the position shown by dotted lines by manipulating the rod 32.

By this arrangement it will be seen that I have provided a radiator attachment for furnaces of very simple and cheap construction, and at the same time providing means whereby a large amount of radiation may be obtained in a comparatively small space, inasmuch as both the inner and outer sides of the radiator are used for radiating purposes, and so arranged that air will be caused to ascend adjacent to both front and back members.

It will further be seen that I have provided in the radiator chamber, three compartments which are separated by vertical plates 25, so that all soot and ashes that are deposited within any of the compartments will settle to the bottom of the radiator by gravity, where they may be easily and quickly removed through the cleanout opening 22. It will therefore be seen that a considerable advantage isgained by mounting the Vseparating partitions between the chambers vertically rather than horizontally, as has heretofore been the practice, as the horizontally arranged partitions form meansfor collecting the ashes and soot and are very difhcult to clean, and in some cases it is impossible to thoroughly clean the radiator.

I claim as my invention:

1. A radiator comprising an air tight casing including front and back wall members spaced apart, the top end of said front member being provided with an inlet opening, and the top end of the back member provided with an outlet opening, opposite and in alinement with the inlet opening, said back member having a clean-out opening in its lower end, verti l'al partitions spaced apart and connecting the front and back members,`with the outlet opening between them to form the casing into end and central compartments, the lower ends i of said partitions terminating above the bottom of said casing, the top ends of said partitions being inclined upwardly and rearwardly, an inclined head plate secured to the inclined ends of said partitions said head plate having a damper opening, a collar projecting from the outlet opening of said casing, the inner end of the upper side of said collar being provided with a horizontal recess to communicate with said outlet opening, a damper designed to be supported when in its closed position on the. upper face of said inclined head plate, the upper and rear end of said damper terminating in said recess, .means for pivotally supporting said damper in said recess, and means for moving said damper from a closed position to an open position.

2. A radiator comprising an air tight casing including front and back wall members spaced apart, the top end of said front mem,- ber being provided with an inlet opening, and the top end of the back member provided with an outlet opening, opposite and in alinement with the inlet opening, said back member having a clean-out opening in its lower end, vertical partitions spaced apart and connecting the front and back members, with the outlet opening between them to form the casing into end and central compartments, the lower ends of said partitions terminating above the bottom of said casing, the top ends of said partitions being inclined upwardly and rearwardly, an inclined head plate having its ends provided with downwardly eXtending flanges, said flanges being secured to the upwardly and rearwardly inclined edges of said partitions, the upper and rear edge of said inclined head plate havinga-damper opening, a collar fornconnecting thebutlet opening of said casing With the flue opening of a furnace, the inner edge of the upper side of said collar being provided with a hori- Zontal recess communicating With said outlet opening, a damper supported on said inclined plate and covering said notched opening, the upper and rear edge of said collar projecting into said recess and terminating in an enlarged portion having a longitudinally ar-` ranged opening, and a shaft extending 10 through said opening and'through the end Walls of said recess for actuating said damper,

Des Moines, Iowa, April 29, 1927.

LESTER WILLIAMS. 

